Main Article Content
In this study, composite panels made of natural oil palm fibers (OPFs) mixed with latex are manufactured and tested to evaluate the thermo-acoustic performance as sound insulation panels. The involving of OPFs in the manufacturing would be a contribution to green technology and optimal usage due the accumulation of deposits thus non-useful ways of removal wastes by burning. The study has included theoretical and experimental investigation to determine the acoustic absorption coefficient (AAC) of composites made of OPFs with latex. Allard approach is used for calculating the values of AAC theoretically in a range of frequencies between 100 Hz to 5000 Hz. In the experimental works, different composite panels of 20, 30, 40, and 50 mm thickness have manufactured. The measurement of AAC has done using an impedance tube instrument. The results show that the value of AAC has increased by increasing the thickness and bulk density for a certain range. Peak AAC values are pointed at high frequencies (more than 1600 Hz) and they have reached up to 0.8. Where, an improving in the value of the AAC between 10-20% could be obtained by increasing the thickness by 10 mm. However, the experimental values show a slight deviation in contrast to theoretical values by ±20% as a consequent to experimental regards as well as some approximated assumptions.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Journal author rights
In order for Romanian Journal of Acoustics and Vibration to publish and disseminate research articles, we need publishing rights. This is determined by a publishing agreement between the author and Romanian Journal of Acoustics and Vibration. This agreement deals with the transfer or license of the copyright to Romanian Journal of Acoustics and Vibration and authors retain significant rights to use and share their own published articles. Romanian Journal of Acoustics and Vibration supports the need for authors to share, disseminate and maximize the impact of their research and these rights, in Romanian Journal of Acoustics and Vibration proprietary are defined below:
For subscription articles:
Authors transfer copyright to the publisher as part of a journal publishing agreement, but have the right to: Share their article for personal use (manuscript version); retain patent, trademark and other intellectual property rights (including research data); proper attribution and credit for the published work.
For open access articles:
Authors sign an exclusive license agreement, where authors have copyright but license exclusive rights in their article to the publisher. In this case authors have the right to: share their article in the same ways permitted to third parties under the relevant user license; retain patent, trademark and other intellectual property rights (including research data); proper attribution and credit for the published work.
Rights granted to Romanian Journal of Acoustics and Vibration
For both subscription and open access articles, published in proprietary titles, Romanian Journal of Acoustics and Vibration is granted the following rights:
- The exclusive right to publish and distribute an article, and to grant rights to others, including for commercial purposes;
- For open access articles, Romanian Journal of Acoustics and Vibration will apply the relevant third party user licence (Open access licencses) where Romanian Journal of Acoustics and Vibration publishes the article on its online platforms;
- The right to provide the article in all forms and media so the article can be used on the latest technology even after publication;
- The authority to enforce the rights in the article, on behalf of an author, against third parties, for example in the case of plagiarism or copyright infringement.